ablkbrd

94 ta .. wipers will not go back all the way down and are draining my battery. pulled fuse for now so shes not dead in the morning but would like to know the cause so i can repair. thanks for any help

SteveC

The circuit board that controls the wipers is toast, you need to replace it. It is conveniently located under the dash board, where of course you must disassemble half the vehicle to get to it.

Then it is a simple matter of "plug and pray"

Injuneer

Not clear what is happening - do the wipers simply stop in the up position when switched off, or do they continue to operate even when switched off, and not park at the base of the windshield?

I can e-mail you a .pdf file of the section (17 pages) from the 94 factory manual, including the diagnostic charts and the replacement instructions, if that would help.

ablkbrd

they do not return to normal full off location . and i can not push them down. if i pull on them a lil bit they cycle once... even when off. i dont want to pull a dash again : (

bobdec

Either wiper switch is messed up or it's the motor assembly. As the motor assembly contains logic components and a couple of relays I would put my guess on the motor assembly. When the wipers are switched off the the run line to motor assembly goes to 0 volts and the 'park' relay is picked in the motor assembly, this relay runs the wiper motor at low speed to pull the wipers into to hidden or park position. When they get to the park position a switch in the motor signals the motor assembly and power is removed. Your symptoms look like either the on/off voltage signal from switch to the assembly logic is still on (greater than 1 volt, bad switch) or the motor assembly logic circuit is running the wipers in error. To check the switch you have to find connector C215 on the steering column, pull it, if wipers park problem is the switch is putting a run signal voltage to the motor. if they still don't park check pin E on connector side to wipers, if at 1 volt or greater you have a short putting a run voltage level on that wire and it will prevent wipers from stopping, or could be motor logic assembly is bad holding the run signal active. If voltage is 0 volts on pin E to wipers then motor assembly needs replacement as it's running w/o a + run voltage signal to the assembly logic. C215 is a straight 11 pack at base of steering column, pin E is a dark green wire pins D thru M are used N & P look open in the book. .

Fred in post #3 offered to email you SM info, have you taken him up on that.. page 8A-91-0 SM book 2 of 2 has the electrical schematic